Shank adapter of rock drilling machine



FIG. 1 is a perspective front view of a shank adapter of rock drilling machine showing my new design;

FIG. 2 is a perspective rear view thereof;

FIG. 3 is a side view thereof;

FIG. 4 is another side view thereof;

FIG. 5 is a front view thereof;

FIG. 6 is a rear view thereof;

FIG. 7 is a perspective front view of another embodiment of my new design;

FIG. 8 is a perspective rear view thereof;

FIG. 9 is a side view thereof;

FIG. 10 is another side view thereof;

FIG. 11 is a rear view thereof; and,

FIG. 12 is a front view thereof. 

The ornamental design for a shank adapter of rock drilling machine, as shown and described. 